Heater-support for nernst lamps.



PATENTED JULY 5, 1904.

. H. N. POTTER.

HEATER SUPPORT FOR NERNST LAMPS.

APPLICATION FILED OUT. 9, 1902.

N0 MODEL.

UNITED STATES Patented July 5, 1904.

PATENT OEEicE.

HENRY NOEL POTTER, OF NEW ROCHELLE, NEW YORK, ASSIGNOR TO GEORGE WESTINGHOUSE, OF PITTSBURG, PENNSYLVANIA.

HEATER-SUPPORT FOR NERNST LAMPS- SPECIFICATION forming part of Letters Patent No. 764,006, dated July 5, 1904.

Application filed October 9, 1902.

To (all whom it may concern.-

Be it known that I, HENRY NOEL POTTER, a citizen of the United States, and a resident of New Rochelle, in the county of Westchester and State of New York, have invented certain new and useful Improvements in Heater-Supports for Nernst Lamps, of which the following is a specification.

My invention relates to improved means for supporting the heaters of electric lamps of the Nernst type, the object being to provide for the easy insertion and removal of the heaters and for the proper maintenance of the same in position.

The details of my invention will be fully understood by reference to the present specification, taken in connection with the accompanying drawings, in which Figure 1 is a section of a portion of a Nernst-lamp base, showing one means of supporting the heaters and inserting and removing the same. Fig. 2 is a similar view of a modification. Fig. 3 is a similar view of another modification, and Fig. 4 is a bottom view of the apparatus illustrated in Fig. 3.

In the drawings, 1 represents an insulating lamp-base or a portion thereof, this part being made of porcelain or some other good insulating and heat-resisting material. The heater-body is shown at 2, and the heaterwire, which is generally wound in a spiral around the said body, appears at 3 3, where its ends emerge from contact with the heaterbody. In practice it is customary to cover the spiral on the heater-body with a paste of the same material as the heater-body and afterward harden it by heat. It is also customary to provide two heater-bodies and arrange them as illustrated in Figs. 3 and 4 with relation to the glower 4.

Referring more particularly to Fig. 1, it will be seen that aninsulating-piece 5 is hinged to the base 1 by means of a spring-hinge 6, supporting a sleeve 7 into which one end of the wire 3 is inserted. It will also be seen that a lug or teat 8 is formed on a portion of the base-piece 1 and that a similar lug or teat 9 is formed on the hinged piece 5. These Serial No. 126,413. (No model.)

lugs or teats enter the hollow ends of the cylindrical body 2 of the heater and serve to maintain the heater-body in position after it has been put in place. In order to place the heater in position, it is only necessary to move the hinged piece 5 outward and set the heaterbodies in, afterward releasing the hinged piece and allowing it to fall back into the position illustrated in Fig. 1. It will be understood that there are two lugs 8 8 on the base 1 and two corresponding lugs 9 9 on the piece 5.

In Fig. 2 the base portion 1 has secured to it a globe-holder 10, of metal. In other respects the structure illustrated in Fig. 2 differs from that shown in Fig. 1 mainly in the circumstance that part 5 in Fig. 2 is held to its work by a screw 11, seated in the globeholder 10, instead of being held by a spring.

In Figs. 3 and 1 the base 1 is provided with a flange 12, beneath which is a globe-holder 13. Between the globe-holder and the lower portion of the base is a metallic cylinder 14, having a turned-in flange 15 at the bottom. A disk 16, of insulating heat-resisting material, such as porcelain, is held between the flange 15 and the bottom of the base-piece 1. This base-piece is cut away in the center to allow room for the heaters 2 2 and the glower 4. On the disk 16 are formed flanges 17 17, which overhang the ends of the heaters and form supports therefor. These flangesappear at the four corners of an opening in the disk 16 corresponding to the opening or depression in the base 1.

It is not thought necessary to show or describe the lamp-circuits, as the present invention relates particularly to structural details, as indicated generally in the openingstatement of invention.

I claim as my invention 1. In an electric glower-lamp, an insulating base or support, a heater body carrying a heater-wire, and a spring-pressed piece holding the heater-body against the base.

2. In an electric glower-lamp, an insulating base or support, a heater, one end of which rests against the said base or support, an adjustable piece adjacent to the opposite end of the heater, and means for pressing the adjustable piece against the said opposite end. 3. In an electric gloWer-lamp, an insulating 5 base or support, a heater, one end of Which rests against the said base or support, an adjustable piece, and means for pressing the said adjustable piece against the opposite'end of the heater-body, the said base or support and IO the said adjustable piece being provided with means for supporting the heater ends.

4:. In an electric glower-lamp, an insulating base or support, one or more heaters adapted 

